Toxicokinetics and bioaccumulation of silver sulfide nanoparticles in benthic invertebrates in an indoor stream mesocosm.

Autor: Silva PV; Department of Biology and CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal. Electronic address: pverissimo@ua.pt., Silva ARR; Department of Biology and CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal., Clark NJ; School of Biological and Marine Sciences, University of Plymouth, Plymouth, UK., Vassallo J; School of Biological and Marine Sciences, University of Plymouth, Plymouth, UK., Baccaro M; Department of Toxicology, Wageningen University, Wageningen, the Netherlands., Medvešček N; Department of Biology, Biotechnical Faculty, University of Ljubljana, Večna pot 111, 1000 Ljubljana, Slovenia., Grgić M; Department of Biology, Josip Juraj Strossmayer University of Osijek, Cara Hadrijana 8/A, 31000 Osijek, Croatia., Ferreira A; Department of Biology and CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal., Busquets-Fité M; Applied Nanoparticles SL, C Alaba 88, 08018 Barcelona, Spain., Jurkschat K; Department of Materials, Oxford University Begbroke Science Park, Begbroke, UK., Papadiamantis AG; School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, B15 2TT Birmingham, UK; NovaMechanics Ltd., 1065 Nicosia, Cyprus., Puntes V; Institut Català de Nanociència i Nanotecnologia (ICN2), CSIC, The Barcelona Institute of Science and Technology (BIST), Campus UAB, Bellaterra, Barcelona, Spain; Institució Catalana de Recerca i Estudis Avançats (ICREA), 08010 Barcelona, Spain; Vall d'Hebron Institut de Recerca (VHIR), 08035 Barcelona, Spain., Lynch I; School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, B15 2TT Birmingham, UK., Svendsen C; Centre of Ecology and Hydrology (CEH-NERC), Wallingford, UK., van den Brink NW; Department of Toxicology, Wageningen University, Wageningen, the Netherlands., Handy RD; School of Biological and Marine Sciences, University of Plymouth, Plymouth, UK., van Gestel CAM; Amsterdam Institute for Life and Environment (A-LIFE), Faculty of Science, Vrije Universiteit Amsterdam, the Netherlands., Loureiro S; Department of Biology and CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2023 May 15; Vol. 873, pp. 162160. Date of Electronic Publication: 2023 Feb 11.
DOI: 10.1016/j.scitotenv.2023.162160
Abstrakt: Mesocosms allow the simulation of environmentally relevant conditions and can be used to establish more realistic scenarios of organism exposure to nanoparticles. An indoor mesocosm experiment simulating an aquatic stream ecosystem was conducted to assess the toxicokinetics and bioaccumulation of silver sulfide nanoparticles (Ag 2 S NPs) and AgNO 3 in the freshwater invertebrates Girardia tigrina, Physa acuta and Chironomus riparius, and determine if previous single-species tests can predict bioaccumulation in the mesocosm. Water was daily spiked at 10 μg Ag L -1 . Ag concentrations in water and sediment reached values of 13.4 μg Ag L -1 and 0.30 μg Ag g -1 in the Ag 2 S NP exposure, and 12.8 μg Ag L -1 and 0.20 μg Ag g -1 in the AgNO 3 . Silver was bioaccumulated by the species from both treatments, but with approximately 1.5, 3 and 11 times higher body Ag concentrations in AgNO 3 compared to Ag 2 S NP exposures in snails, chironomids and planarians, respectively. In the Ag 2 S NP exposures, the observed uptake was probably of the particulate form. This demonstrates that this more environmentally relevant Ag nanoform may be bioavailable for uptake by benthic organisms. Interspecies interactions likely occurred, namely predation (planarians fed on chironomids and snails), which somehow influenced Ag uptake/bioaccumulation, possibly by altering organisms´ foraging behaviour. Higher Ag uptake rate constants were determined for AgNO 3 (0.64, 80.4 and 1.12 L water g -1 organism day -1 ) than for Ag 2 S NPs (0.05, 2.65 and 0.32 L water g -1 organism day -1 ) for planarians, snails and chironomids, respectively. Biomagnification under environmentally realistic exposure seemed to be low, although it was likely to occur in the food chain P. acuta to G. tigrina exposed to AgNO 3 . Single-species tests generally could not reliably predict Ag bioaccumulation in the more complex mesocosm scenario. This study provides methodologies/data to better understand exposure, toxicokinetics and bioaccumulation of Ag in complex systems, reinforcing the need to use mesocosm studies to improve the risk assessment of environmental contaminants, specifically NPs, in aquatic environments.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023. Published by Elsevier B.V.)
Databáze: MEDLINE
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